Calculating Atoms in a Compound: Part 1

How many total atoms are in 20 molecules of copper II stearate?
20 Cu(C₁₆H₃₅O₂)₂

• 2,140 atoms 
• 2,160 atoms
• 1,080 atoms
• 1,020 atoms

How many atoms are in NO₂?

• 1
• 2
• 3
• 4

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NGSS.MS-PS1-1

How many atoms are in CaCO₃?

• 3
• 4
• 5
• 6

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NGSS.MS-PS1-1

Is NO₂ an element or a compound?

• element
• compound

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NGSS.MS-PS1-1

How many total atoms are in gold hydroxide?
Au(OH)₃

• 3
• 4
• 7
• 8

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NGSS.MS-PS1-1

Is CaCO₃ an element or a compound?

• element
• compound

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NGSS.MS-PS1-1

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

Salt has a chemical formula of NaCl.  Salt is a...

• Compound
• Element
• Mixture
• None of the Above

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NGSS.MS-PS1-1

How many elements are represented in the compound?
Na₂CO₃

• 3
• 4
• 5
• 6

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NGSS.MS-PS1-1

How many atoms are there TOTAL in:
H₂SO₄

• 6
• 5
• 7
• 3

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NGSS.MS-PS1-1